I am asked to permit Keychain Access to access the information stored in my keychain when I run the ScanSnap Manager (for Mac) on my Mac. What should I do?

In Mac OS, the password for accessing to the ScanSnap is stored in the keychain, and the Keychain Access dialog appears because the ScanSnap Manager tries to refer to this information every time you run it.
The dialog box will never appear again by clicking [Always allow].